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/* exynos_drm_iommu.h
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* Authoer: Inki Dae <inki.dae@samsung.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _EXYNOS_DRM_IOMMU_H_
#define _EXYNOS_DRM_IOMMU_H_
struct exynos_iommu_gem_data {
unsigned int gem_handle_in;
void *gem_obj_out;
};
/* get all pages to gem object and map them to iommu table. */
dma_addr_t exynos_drm_iommu_map_gem(struct drm_device *drm_dev,
struct drm_gem_object *obj);
/* unmap device address space to gem object from iommu table. */
void exynos_drm_iommu_unmap_gem(struct drm_gem_object *obj);
/* map physical memory region pointed by paddr to iommu table. */
dma_addr_t exynos_drm_iommu_map(void *in_vmm, dma_addr_t paddr,
size_t size);
/* unmap device address space pointed by dev_addr from iommu table. */
void exynos_drm_iommu_unmap(void *in_vmm, dma_addr_t dev_addr);
/* setup device address space for device iommu. */
void *exynos_drm_iommu_setup(unsigned long s_iova, unsigned long size);
int exynos_drm_iommu_activate(void *in_vmm, struct device *dev);
void exynos_drm_iommu_deactivate(void *in_vmm, struct device *dev);
/* clean up allocated device address space for device iommu. */
void exynos_drm_iommu_cleanup(void *in_vmm);
#endif
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